Pennsylvania manufactured the first custom, vanity or personalized license plate in 1931. according to: http://www.licenseplates.tv/history.html
1935... Special reserved license plates became available. I'm not sure if that included "personal" plates or not... I would guess that's what it means. http://www.bmv.ohio.gov/misc/bmv_hist.htm http://www.bmv.ohio.gov/vehicle_registration/special_plates.htm
Good ol Boy; Thanks...seems looking to the BMV was too obvious; just didn't go there. I'm sure there's a 'Stupid Assman' joke in there somewhere!!